搜索结果: 1-9 共查到“农业工程 period”相关记录9条 . 查询时间(0.081 秒)
One-parameter model of sterilisation process. Heating and cooling period
sterilisation effect hermal treating of foods temperature profile parameters evaluation first order dynamics preservation of foods thermal processing
2014/2/26
The article deals with the simplification of the heat transfer model for food sterilisation in cans and jars. The one-parameter model was derived and identification procedures of its parameters were e...
棉花苗期地膜回收机设计与试验(Design and Experiment of Plastic Film Collector for Cotton Fields during Seedling Period)
地膜回收机 棉花 苗期
2010/12/28
设计了一种浮动同步卷膜式棉花苗期地膜回收机。分析和确定了起膜铲、抖土辊和浮动卷膜机构等关键部件的结构参数。采用起膜铲和扁纺锤状抖土辊相结合的结构,能很好地实现膜苗、膜土分离;采用浮动同步卷膜机构能有效避免收膜作业过程中的扯膜、断膜或滞留堵塞现象。田间试验表明:机具的最佳作业速度为2~3km/h,当苗株高度不大于30cm时,地膜回收率不低于95.7%,伤苗率不大于2.37%,能实现一膜两行种植...
收割期牧草底部茎秆生物力学性能试验(Experiment on Biomechanical Properties of Bottom Stems of Forage in Harvesting Period)
牧草茎秆 抗拉强度 化学成分 显微结构
2010/5/5
以北方典型多年生豆科牧草紫花苜蓿、小冠花和禾本科扁穗冰草、无芒雀麦收获期底部茎秆为研究对象,在500N微机控制电子万能试验机上试验研究了主要力学性能,并测定了茎秆在不同状态下纤维素、木质素、蛋白质等主要化学成分含量,观测了茎秆的微观组织结构,得到了茎秆扫描电镜下的解剖构造图像。研究结果表明:4种牧草收割期底部茎秆应力σ与应变ε曲线服从虎克定律,禾本科扁穗冰草茎秆抗拉强度高而弹性小;豆科小冠花茎秆抗...
SWOT analysis of Slovak farmers in the pre-accession period to the EU
swot analysis, restructuring individual farm transactional costs incomes households
2014/3/29
In the framework of Slovakia entering into the European Union, there was done a PHARE-ACE survey in years 1999–2000. The name of this survey was “Micro-economic analysis of farming households restruct...
Development of the Slovak agriculture and agricultural policies during the transition period
agriculture, Slovakia EU political economy transition
2014/3/29
The economic importance of agricultural sector in Slovakia declined during transition period. There are several reasons for this: declining terms of agricultural trade, extreme weather, transformation...
Importance of ownership and lease of agricultural land in Slovakia in the pre-accession period
ownership tenant agricultural land land lease land market
2014/3/29
A vast majority of agricultural land is leased, only a few owners manage their own land. The market with agricultural land falls behind and, together with land lease, it depends on the prosperity of S...
The adjustment of agrarian business structure to the European agrarian structures during pre access period into the EU
quantitative and qualitative reproduction agrarian management top management integration and globalization tendencies agricultural business structures
2014/3/28
The article deals with the preparation of the agricultural business structure for accession into the European agrarian structures in the pre-accession period. Main attention is devoted to the preparat...
Czech farmers facing agricultural policy in the period of revitalization
action structures transaction costs agricultural policy SAPARD
2014/3/28
The paper addresses the behaviour of Czech farmers in the frames (structures) created by the agricultural policy in Czechia during the period of the Czech agriculture revitalization. The theoretical b...
Micro-economic analysis of households restructuring in the pre-accession period to the EU
restructuring households cooperatives individual farms
2014/3/28
Transformation process and restructuring of the existing enterprises started in the Slovak Republic in 1990, what influenced all companies alike as well as rural households. Business companies and pri...